Duplicate sub-tasks are getting created

[Kalpana Ramesh]

While creating launch task, duplicate task got created. While trying to create the issue, an error message is popping but gets created anyway but as duplicates.

The error message is as follows:

Error creating issue: Cant transition workflow instance#319029. Current state is 0, requested state is 1.

How can this be rectified?

Thanks!

[Nic Brough -Adaptavist-]

That suggests you have a (broken) post-function or listener creating extra issues.  Start with a look at the workflow - what post functions does the "create" transition have?

[Kalpana Ramesh]

I have added some postfunctions to create sub-tasks. Apart from that there is a postfunction to fast track the issue to the next status. Could that be the problem?

[Nic Brough -Adaptavist-]

Yes, it probably is.  You'll need to explain your exact setup and what add-ons you are using.

[Kalpana Ramesh]

This is what we are using:

Script workflow function : Fast-track transition an issue : If the condition is met the action 131 Pre-launch Preparation will be applied. 
Note that this should go after the Fire Event function.

There are no  conditions specified inside the post function.

[Nic Brough -Adaptavist-]

Which addon is it coming from?

[Kalpana Ramesh]

I am not aware if it's an add on. It was added using the script post function - Fast track transition, so i assumed it is a built in script.

[Nic Brough -Adaptavist-]

Scripts are not native to JIRA, they're done by add-ons.  It could be one of several - could you confirm which one it is by looking in the "Admin -> Manage add-ons -> User installed" - I'm guessing you'll see "Script Runner" in there, but need to be sure.

[Kalpana Ramesh]

Yes, Nic. You're right. It works using the "Script Runner" add-on.

[Nic Brough -Adaptavist-]

Sorry for the delay, didn't realise you'd responded.

Could you list all of the post functions you have on the transition where this is being done?  A screenshot might be easiest in this case, as we'll want to look at ordering as well as the list of things being done.